| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 3.32293 |
| 2021 | 3.28617 |
| 2020 | 3.24456 |
| 2019 | 3.19791 |
| 2018 | 3.15238 |
| 2017 | 3.10446 |
| 2016 | 3.0498 |
| 2015 | 2.99057 |
| 2014 | 2.92046 |
| 2013 | 2.8377 |
| 2012 | 2.75153 |
| 2011 | 2.66574 |
| 2010 | 2.58121 |
| 2009 | 2.50174 |
| 2008 | 2.43067 |
| 2007 | 2.36591 |
| 2006 | 2.30735 |
| 2005 | 2.25674 |
| 2004 | 2.21496 |
| 2003 | 2.18202 |
| 2002 | 2.15567 |
| 2001 | 2.13404 |
| 2000 | 2.11567 |
| 1999 | 2.10092 |
| 1998 | 2.09336 |
| 1997 | 2.09476 |
| 1996 | 2.10787 |
| 1995 | 2.12841 |
| 1994 | 2.14878 |
| 1993 | 2.16742 |
| 1992 | 2.18435 |
| 1991 | 2.20428 |
| 1990 | 2.23011 |
| 1989 | 2.26001 |
| 1988 | 2.29251 |
| 1987 | 2.32725 |
| 1986 | 2.36161 |
| 1985 | 2.39357 |
| 1984 | 2.42267 |
| 1983 | 2.44812 |
| 1982 | 2.46957 |
| 1981 | 2.4885 |
| 1980 | 2.50566 |
| 1979 | 2.52074 |
| 1978 | 2.53401 |
| 1977 | 2.54604 |
| 1976 | 2.55722 |
| 1975 | 2.5679 |
| 1974 | 2.57867 |
| 1973 | 2.59056 |
| 1972 | 2.60169 |
| 1971 | 2.60922 |
| 1970 | 2.61247 |
| 1969 | 2.61127 |
| 1968 | 2.60432 |
| 1967 | 2.59381 |
| 1966 | 2.58631 |
| 1965 | 2.58535 |
| 1964 | 2.59063 |
| 1963 | 2.60333 |
| 1962 | 2.62017 |
| 1961 | 2.63198 |
| 1960 | 2.63309 |